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IEEE 1584 · Engineering

Power Quality Analysis in Portugal - carelabs Portugal

Power quality analysis checks your electrical distribution system when it fails to sustain correct functioning of its loads — identifying the root cause, whether that's improper wiring, incorrect grounding, unbalanced loads, or improperly protected equipment, before it causes motor burnout, control system faults, power factor penalties, or transformer failure. Carelabs collects voltage, current, and power factor measurements at key points across your Portuguese facility using power quality analysers, referenced against IEEE Power Quality Standards and NFPA 70B, and delivers findings aligned with RTIEBT.

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Specify for the supply you actually have

A compliant supply and equipment that trips on it can both be true at once. Where that happens, the productive question is not whose fault it is but what immunity the next purchase needs.

What We Deliver

The supply characterised properly

Dips, swells, interruptions, distortion, unbalance and flicker are measured and reported, with dips characterised by depth and duration rather than counted, because equipment survives or trips according to both.

WHY IT MATTERS

Buying equipment the supply will trip

Plants routinely install sensitive equipment onto a supply whose disturbance profile has never been measured, then absorb the resulting stoppages as an operating characteristic of the site rather than as a specification failure.

  • Monitoring installed at the point of supply and at the affected process, since a dip that is modest at the incomer can be severe at the end of a loaded feeder.
  • Measurement conducted to a defined method, so records are comparable against the distribution operator's own data where the cause proves to be upstream.
  • Sufficient duration to capture intermittent events, because the disturbances causing the most disruption are by definition the least frequent.
  • Records aligned with production logs, without which a measurement archive is data rather than evidence about a specific loss.
  • Control systems assessed separately from process loads, as the interruption frequently originates in instrumentation rather than in the machinery itself.
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DELIVERABLES

What you receive

Issued against RTIEBT and the recognised supply voltage characteristics, with measurement method and period stated.

  1. 1Event log characterising every dip, swell and interruption by depth and duration
  2. 2Distortion, unbalance and flicker assessed against applicable limits
  3. 3Comparison of recorded disturbances against the immunity of the affected equipment
  4. 4Origin determination for each significant event, internal or upstream
  5. 5An immunity specification usable as a purchasing requirement for replacement equipment
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How the study runs

01

Establish what is stopping

We start from the symptom: which process halts, how often, and whether any pattern exists by shift, time of day or season.

02

Place instrumentation

Monitoring goes at the point of supply and at the affected equipment, because the difference between those two records frequently contains the answer.

03

Record across a real period

Measurement runs long enough to capture intermittent events, which do not occur on demand during a short visit.

04

Compare against immunity

Recorded disturbances are assessed against the tolerance of the affected equipment, which identifies which events were survivable and which were not.

05

Determine origin

Each significant event is classified as internal or upstream, since that decides both the appropriate remedy and who is able to apply it.

06

Specify and recommend

Mitigation is matched to the disturbance present, and an immunity specification is issued for equipment yet to be purchased.

Frequently asked questions

Supply standards define what the operator must deliver, not what equipment tolerates. Modern electronic equipment is often more sensitive than the standard assumes, so a compliant supply and equipment that trips on it are both possible at once. The productive response is to establish the immunity your equipment needs and specify for it.
Yes, and it is the cheapest point at which to address the problem. Once the supply's disturbance profile is measured, the required ride-through becomes a procurement requirement. Retrofitting immunity after installation, through ride-through modules or a UPS, costs considerably more than specifying it at purchase.
A week is the usual minimum and longer where the problem is intermittent. The disturbances causing the most disruption tend to be the least frequent, so a short window can record nothing and be misread as evidence the supply is sound. Where stoppages occur monthly, monitoring should span that interval.
For control systems and instrumentation, often yes, and that is frequently where the interruption actually originates. For full process loads it is rarely economic. Establishing whether the trip begins in the control circuit or in the machinery usually changes the answer, and that determination comes out of the measurement.

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